Question

A coal car on a train weighs 30 tons plus 1 ton per cubic yard of coal x that it carries. The total weight of a coal car is: f(x) = x + 30. How will the graph of this function change if the coal car weight is changed to 26 tons? (1 point)

The line will shift vertically up 26 tons.
The line will shift vertically down by 26 tons.
The line will shift vertically up by 4 tons.
The line will shift vertically down by 4 tons.

Answer 1

@mhchen

Answer 2

In the graph, the function in the value of f(x) = x+30 that represent the total weight of car by its weight of 30 tons. This graph is the bases of your second graph. So if it is weight by 26, the graph would be shifted vertically downward because it is the value of the X that is affected. so the answer to your question is the forth choice

Answer 3

o oay i get it

Answer 4

thanks